S
M
T
W
T
F
S
28
90°
70°
29
91°
75°
30
91°
75°
1
91°
68°
2
91°
72°
3
91°
72°
4
90°
68°
5
86°
66°
6
86°
66°
7
90°
66°
8
90°
68°
9
90°
75°
10
91°
77°
11
88°
72°
12
88°
68°
13
88°
66°
14
90°
70°
15
84°
70°
16
84°
69°
17
90°
71°
18
91°
73°
19
91°
71°
20
91°
69°
21
90°
69°
22
88°
65°
23
85°
62°
24
89°
68°
25
87°
68°
26
89°
69°
27
88°
67°
28
92°
71°
29
91°
71°
30
92°
72°
31
92°
71°
1
91°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Diamond City
Diamond City's July 2026 forecast shows daily high temperatures ranging from 84° to 92°, with overnight lows between 62° and 73°. The average high for July is 89° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Diamond City. See also: August | September | October.